> For the complete documentation index, see [llms.txt](https://www.zerabooks.com/help/llms.txt).

# Reconciliations & Month-end

Prove every month against the bank, sign it off and close the books.

- [How reconciliation works](https://www.zerabooks.com/help/reconciliations/how-reconciliation-works): ZeraBooks checks every account, month by month, against the bank's own statement. Here is what the three checks are and what every dot on the timeline means.
- [Fix a month that doesn't tie](https://www.zerabooks.com/help/reconciliations/fix-a-month-that-doesnt-tie): When a statement and your ledger disagree, the month shows an orange ! on the timeline. Here is how to find the difference and fix it, usually in a minute.
- [Verify a statement with AI](https://www.zerabooks.com/help/reconciliations/verify-a-statement-with-ai): When a statement doesn't tie, ZeraBooks can re-read the original document line by line and propose only the fixes that make it tie. You apply them with one click.
- [Finalize a month](https://www.zerabooks.com/help/reconciliations/finalize-a-month): Finalizing signs off a month that ties, recording what you verified and when. Here is how to finalize one month, or every tied month at once.
- [Reopened months and removing a sign-off](https://www.zerabooks.com/help/reconciliations/reopened-months): A finalized month reopens on its own when its checked numbers change. Here is how to see what changed, remove a sign-off, and finalize again.
- [Close and reopen the books](https://www.zerabooks.com/help/reconciliations/close-and-reopen-the-books): Closing the books locks every date on or before a day, so nothing reconciled can change by accident. Here is how to close through your reconciled month, and how to reopen.